Water-tube boiler.



J. E..BBLL.

WATER TUBE BOILER. AexiLIUATIoN riLnnooT. e, 190e. v 984,880, PatentedFeb. 21, 1911.

2 sums-SHEET 1.

.To afLL 'whom 'ii may concern.'

mi@ sul @MZQE JOHN E. BELL, OF NEW YORK, N. Y., ASSIGNOB. T0 THEIBA'BCOGK @t WILCX CGMPANY, OF NEVJYORK, N. Y., A CRPORATIQN 0F NEWJERSEY.

warsnrunn norms.

Specification of Letters Patent.

Patented Feb. 2i, 1911..

lApplication led ctober 6, w06. Serial No. 337,'7/03.

Be it known that I, JOHNE. BELL, of New York, New York county, New York,have invented a new and useful Improvement in VVater-'lube Boilers, ofwhich the following is. a full, clear, and exact description,referbetween the main banks; also to provide for good circulation o'fthe water throughout the various tubes. I

In the drawings, 2 and 3 represent the upper transverse steam and waterdrums con neeted'by banks of curved tubes 4@ and 5 with a lowertansverse mud drurn 6. Vihe 'furnace is indicated at 7 and the gases arecli-- reeted in up vvand down passes by a central battle 8 which I haveshown as located' cen-I trally between the main banks 4e and 5. Thegases rise among the tubes ot the iront bank, cross through the tubesabove the battle, and flow down through the tubes inthe rear bank to theoutlet flue 9. L

ln addition to the hea-ting surface of the main banks, i provide tworows of tubes l0 and ll which extend along the front and the rear facesof the bathe and are connected at their upper'` ends to the water spaceol the steam and water drums and at their lower ends tothe niud drum. Inorder to defleet the gases from these baliie tubes l0 and the rear upperdrum 3.l also feed 1the water into this drum through the pipe 18.

With the construction above described, the weten will How up the bank oftubes et and down 'the tubes l0; it will also tiow up the bankffof fronttubes 5 and down the tubes 11. 1n addition to the above circulations, lpreferably employ direct water circulators 19 which extend between thewater space of the steam and water drums. This causes the circulation tobe up the front bank of tubes, back through these circulatoire 19 intothe rear upper drum and thence down the rear bank to the mud drum. Thesecirculators Y may be used or .not as desired.

rlhe advantages of my invention result from the compact form andarrangement of the heating surface; from the small number ot' drums usedand from the good circulation atorded.

Straight or curved tubes may be used for any of the tubes shown. Boxesor headers may be employed instead of drum shaped receptacles and otherchanges may be made without departing from my invention.

l. ln a water tube boiler, a pair of spaced steam nd water drums, a muddrum below the upper dru1ns, a baiie rising from the mud drum,symmetrically arranged banks of tubes upon opposite sides of the baflieand communicating between vthe mud drum and the respective upper drums,and. an additional row oi tubes between each bank ,andv the baidieandconnecting the ruud drum and the adjacent steam and water drum,substantiaily as described. .i

in a water tube boiler, a pair of spaced steam and water drums, a muddrum below and in line with the interval between the upper drums, abattle rising from the mud drinn, symmetrically arranged banks of-4tubes upon opposite sides ot the bathe and communicating between theruud drum and the respective upper drums, and an additional row ot tubesbetween each bank 'and the battle and connecting the rnud drum and theadjacent steam and water drum, substantially as described.

3. In water tube boiler, a setting, a pair of upper spaced transversesteam and water drums, a lower transverse mud drum in alineinent withthe interval between the steam and water druins, a battle rising fromthe mud drum and disposed in a pla-ne substantially midway between thesteam and one f the steam and water drums and to the Water drums, asymmertically arranged bank inud drum, substantially as described.

of upright tubes at eachside of the baHie 5. A unit for a water tubeboiler made v with their upper ends connected to the adup of a pair ofsteam and Water drums. a 5 jacent Steam and water drum, and their muddrum,a bank of upright symmetrically- 4 lower ends inclined inwardly andconnected arranged tubes connecting the mud drum tothe mud drum at theadjacent side of the and one of the steam and water drums, an-

baie, an added row ofupright tubes against other bank of uprightsymmetrically-arand at each side of the bafe with their lower rangedtubes connecting the mud drum with l10 ends communicating with the topof the mud the other steam and water drum, there being drum and thelrupper ends inclined Outa space between the two banks of tubes, an-wardly and connected to the adjacent steam upright battle dividing thespace into front and water drum, substantially horizontal and rearpasses, a row of added tubes in the battles extending from the uprightbaffle, and rear pass leading upwardly from the mud ili fire-box indirect communication with thc drum to the rear steam and water drum, and

ower end of one of the banks of tubes and another row of added tubes inthe front pass tbe adjacent side of the mud drum, substanleadingupwardly from the mud drum to the tially as described. i front steam andwater drum, substantially 4. In a water tube boiler, the combination asdescribed. y 20 with a pair of steam and water drunis,'a In testimonywhereof, I have hdreunto set mud drum, and a symmetrically arranged myhand.

i bank of tubes connecting each steam and ,i

water drum with the mud drum, of a battle f j i JOHN L BELL' locatedbetween the banks of tubes, and an Witnesses: 2,5' added row of tubes ateach side of the baie, G. K. WANNEMACHER,

each added row of tubes being connected to CHAS. B. KNUDsoN

